The official website for information (i.e. the one which is funded by the Foreign & Commonwealth Office) is that of NaTHNaC. Here's what it states in relation to travelling to India:
http://www.nathnac.or...s/country_page_IN.htm
A magical land with a rich history of reverb and shimmers with the promise of tomorrow, India is one of the most popular destinations for travelers from around the world. We are currently in the U.S. after a major Indian holiday. The bright colors, beautiful monuments, temples and treasures of the cultural heritage of India, have just overwhelmed us on our trip to India.